package com.atguigu.common.valid;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.util.HashSet;
import java.util.Set;

/**
 * 自定义的校验器 ConstraintValidator
 *
 * @author Don
 * @date 2020/11/8 16:01
 */
public class ListValueConstraintValidator implements ConstraintValidator<ListValue, Integer> {

    private final Set<Integer> set = new HashSet<>();

    /**
     * 初始化方法
     */
    @Override
    public void initialize(ListValue constraintAnnotation) {
        int[] values = constraintAnnotation.values();
        for (int val : values) {
            set.add(val);
        }
    }

    /**
     * 判断是否校验成功
     *
     * @param value                      需要校验的值
     * @param constraintValidatorContext ConstraintValidatorContext
     * @return boolean
     */
    @Override
    public boolean isValid(Integer value, ConstraintValidatorContext constraintValidatorContext) {
        return set.contains(value);
    }

}
